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25	25	The Dragino N95S31B is a (% style="color:blue" %)**NB-IoT Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the (% style="color:blue" %)**surrounding environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via NB-IoT network*.
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27	27	The temperature & humidity sensor used in N95S31B is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing **(%%)for long term use.
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29	29	N95S31B supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP**(%%) for different application requirement.
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31	31	N95S31B is powered by(% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period. Please check related Power Analyze report).
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34	34	~* make sure you have NB-IoT coverage locally.
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53	53	* Micro SIM card slot for NB-IoT SIM
54	54	* 8500mAh Battery for long term use
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56	56	== 1.3  Specification ==
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61	61	* Supply Voltage: 2.1v ~~ 3.6v
62	62	* Operating Temperature: -40 ~~ 85°C
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64	64	(% style="color:#037691" %)**NB-IoT Spec:**
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66	66	* - B1 @H-FDD: 2100MHz
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70	70	* - B20 @H-FDD: 800MHz
71	71	* - B28 @H-FDD: 700MHz
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73	73	(% style="color:#037691" %)**Battery:**
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75		-
76	76	* Li/SOCI2 un-chargeable battery
77	77	* Capacity: 8500mAh
78	78	* Self Discharge: <1% / Year @ 25°C
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79	79	* Max continuously current: 130mA
80	80	* Max boost current: 2A, 1 second
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82	82	== ​1.4  Applications ==
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84	84	* Smart Buildings & Home Automation
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108	108	=== 1.5.2 BOOT MODE / SW1 ===
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110	110	1) ISP: upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
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112	112	2) Flash: work mode, device starts to work and send out console output for further debug
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371	371	1. By default, the device will send an uplink message every 1 hour.
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374		-
375	375	=== 2.3.1  Payload Analyze ===
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377	377	N95S31B uplink payload includes in total 21 bytes